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rb
Posts:
5
Registered:
2/19/08


Re: Geometry Problem
Posted:
Feb 19, 2008 12:09 PM


I.M. Soloveichik wrote: > There is not enough information
How do you prove it? ;)
> unless that angle at D which looks like it is > 90 is supposed to be 90in that case the angle x is 40 degrees.
You shouldn't see what "looks like" if you cant say it for sure. The picture is only indicative. Drawing it with the right angles could be an help but it's a nonnecessary condition to solve a problem.



